Knitting-machine.



M. c. 'MILLER.

KNITTING MACHINE. APPLICATIOA! FILED JULY 20. I9Hi.

1,245,007. h Patented 0%..30', 191?.

UNITED STATES PATaNroFrIoE. 1

MAX G. MILLER, 01? CUMBERLAND HILIi, RHODE' ISLAND, ASSIGNOR TO JENCKES KN TTING MACHINE COMPANY, OF PAWTUCKET, RHODE ISLAND, A CORPORA- 'rnm or RHODE isplmn.

KNITTING-MACHINE.

Specification of Letters Patent.

Patented Oct. 30, 1917.

Applicaflon filed July 20, 1916. Serial No. 110,394.

To all whom it may concern: I

Be it known that 1, Max C. MILLER,a subject of the Em eror of Germany, residing at Cumberland ill, in the county of Cuniberand exact description 0? the invention, such as will enable others skilled in the art to which'it appertains to make and use the same. The invention relates to knittin machines having independently operate springneedles. U

An object of the invention is to secure an elfective wrapping of the yarn about the needles of a circular machine betweenthe yarn guide from which the yarn leads directly to the needles and the knock-over point where the new loopis drawn through the 01d loop and the old loop cast off, i To this end the stitch cams are shaped to draw down the needles in two stages, with a substantial dwell between them, thus forming a two stage knitting'wave with an intermediate dwell. This enables the yarn guideto be located in advance ofthe dwell and at a sufficient distance from the knock-over point to secure a wrap of the yarn about the me dles from the knoclcover point to the yarn taking point without requiring an excessive vertical movement of the needles.

A further obj ect of the invention is to provide means for 'evening the old loops on the.

needles just before the new loops are drawn and the old loops cast'ofi, thus securing a unlform fabric and permitting a tight-er ,stitch to be formed; For this purpose atwo-stage knitting Wave is'so formed that the dwell in the downward movement of the needles occurs after the boards have been pressed and have entered the old loops to such an extent that theloops on the series oi'needles in the "dwell encircle the sprin parts of the beards The. spring of t e beards will therefore evenly distribute the am among the loops about these needles fore they reach the second stage of the knitting wave, so that the stitches will be uniform and may be knittighter without danger of breakin or cuttin the yarn.

T e difierent eatures o the invention will beunderstood from an inspection of the accompanying drawings and'the following detailed description of the mechanism illustrated therein.

In the drawings, Figure 1 is a vertical sectional view indicating so much of a circular spring-needle machine as is necessary to illustrate the application of the preferred. form of the present invention thereto; Fig.

where the needle positioning presser engages 'the backs of the needles; Fig. 3 is a view showing the form of the knitting cam 1 2 is as i'milar view taken through the point and the two-stage wave which is formed in theneedles by the cam; and Fig. 5 is a detail view indicating the osition of the loops on the needles and the well in the knitting In the drawings theinvention is shown. embodied in a circular machine. The needle well-known manner.- The upper end of the needle cylinder carries a web holder ring 3 providedwith radial grooves for the web holders ,4, which may be operated in the usualmanner by a. cam ring 5 Themeans for closing th needles comprises a presserplate in the from of a ring 6 which surrounds the needles, and a coiiperating prcsser in the form of a small beards of the disk '7 which engages the backs of the needlcs at the pressing point and presses them outward, so that the beards engage and are closedyby the presser ring 6 he ring is mounted upon. the web holder ring 3 so that it remains in fixed relation to the nee The presser disk is mounted to rodles. tate freely on a screw 8 secured in the free end of a supporting arm 9 which is pivotally supported on a pivot screw 10 and is primed in a direction to force the disk against the backs of the needles by a spring 11. 'Assuming that the travel'of the needle with relation to the stitch cams;- due to the rotation of either the needle cylinder or cam roe cylinder, is in the direction of the arrow,

3, the supportin arm for the resseris am unted. t. at :when it. yields a will swing obliquely away from the needles in the direction of their travel, thus relieving any undue ressure' which might otherwise injure or reak the needles or deflect ,them laterally. The yarn indicated at 3 leads from a yarn guide 12 directly to the needles, andin order that it may enter the hooks of the needles as the needles are drawn down, it should lie snugly against the fronts of the needles at the point where the beard passes the yarn. To insure the proper en-' gagement of the yarn with the needles at this point,'a needle'positioning reser 13 is arranged tofengage the backs o the needles and preferably to deflect them outward at the ointwhere the beards whic for convenience may term 1 the yarn taking point. As shown, this presser consists of an arm pivoted on the screw 10 above the arm 9, and pressed against the backs of the needles by a spring 14. The forward .movement of'the presser is limited by an adjusting stop serew 15 mounted on the premer and arranged to engage a fixed stop 16. As the needle travels along the resser, any needle which'maybe bent inward out of alinement with the adjacent needles, or may be out of pro er position to take the yarn, will be presse outward into correct yarn taking position, 'so that the yarn which wraps around the needles will lie against the outer sides of these needles whichare passing the yarn taking point. This will insure the passage of the yarn un der the beards and into the hooks of the needles.

To even the loops on the needles before they reach the knock-over point, and to secure an adequate wrap of the yarn about the needles, in case the yarn is fed directly to the needles, the knitting cams are shaped peass the; am,

ing new loops through the old loops which are cast off or knocked over the pp ends of the needles, so that the nee les rise through the new loops.

' While the invention has been shown as embodied in a circular'machine, it will be understood that certain features of the in- -vention are not confined in their application to circular machines, butmay be embodied to'form a two-stage knitting wave with an,

intermediate dwell, as indicated diagrammatically in Fig. at, the general shape of the knitting cam being indicated by the dotted lines which'also indicate the paths of movement of the upper. ends of the needles and the lower- ,endsr of the beards. first stage 17 of the knitting wave the yarn is taken by the needles, and the beards are pressed and enter the old loops which are supported by the web holders. After the needles have been moved downward, so that the loops surrounding theneedles are part wayup the beards, as indicated in Fig. 5,

During the -wave in the needles with an intermediate they pass into the dwell. 18 of the knitting wave, and as they travel along this part of the wave the outward spring of the beards tends to evenly distribute the yarn among the loops about the needles. Just before the needles reach. the -knock-over point they pass down the second stage 19 of the wave, drawwith advantage in other types of springneedle machines. It will also be understood that thespecific construction and arrangement of parts shown and described is not essential to the broader featuresv of the inbodied in machines inwhich the needle cylinder rotates, or in which the cam cylinder rotates, and also that certain features of the invention may be embodied in machines pro-' vided' with yarn measuring sinkers, as well as in machines in which the yarn is fed directly. to the needles. I

Having explained the nature and object of the invention, and specifically described one form of mechanism in which it may be embodied, what is claimed is 1. A knitting machine, having, in combi nation, independently-operated spring-needles, means for forming a two-stageknitting wave in the needles with an intermediate dwell, and means for feeding the .yarn directly to the needles without sinking and pressing the beards-during the first stage and for casting'ofi' the old loops during the last stage, the pressing being terminated while the' old loops are on the spring part of the beards Y 2. A knitting machine, having, in 'combination, independently-operated spring-needles, means for forming atwo-stage knitting dwell, theloops on the'series ofneedlesthe dwell embracing the spring part ofthe beards and means for feeding yarn directly tothe needles without sinking,"and' for terminating the pressing while the old loops are on the spring part of the beards.

3. -A knitting machine,-having, in combination, independently operated' spring-heedles, means for forming a two-stage knitting wave in the needles with an intermediate d.\'vcll, and means fOi' fe'edin'g the yarn directly to the needles during the'first stage :Wlth0lll3 sinking, and for terminating the loops are onfthe 'iressin while the old spring pait-ot the beards. p? I P M XI M E 

